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Journal of Radioanalytical and Nuclear Chemistry

, Volume 286, Issue 3, pp 649–654 | Cite as

Preparation of 26Al, 59Ni, 44Ti, 53Mn and 60Fe from a proton irradiated copper beam dump

  • Marin Ayranov
  • Dorothea Schumann
Article

Abstract

The station for pions cancer therapy was operated at PSI from 1980 to 1992. After a cooling time of 12 years it’s made of copper beam dump was cut and samples were taken for analytical purposes. The sampling collected about 500 g of high active copper chips that can be used for separation of exotic radionuclides. The analyses by gamma spectrometry, LSC and AMS showed main nuclides present to be 60Co, 54Mn, 22Na, 65Zn, 26Al, 53Mn, 59Ni, 63Ni, 55Fe and 60Fe and 44Ti with a daughter nuclide 44Sc. In the frame of ERAWAST project a procedure combining selective precipitation and ion exchange for the separation of the rare radionuclides from the copper beam dump was developed. The proposed separation procedure is easy for remote controlled implementation in a hot cell. The ion exchange separation of Ni, Al, Mg, Ti and Fe was complete and high decontamination factors for copper and cobalt were achieved. Based on the developed procedure a remotely controlled system for separation of exotic radionuclides from the copper chips was set up. The full scale system was installed in a hot cell where high activity levels can be handled. In order to evaluate the reliability and functionality of the system extensive tests have been done. During the test period 13.86 g in total of the proton irradiated copper beam dump were processed for separation of 26Al, 59Ni, 53Mn, 44Ti and 60Fe. The results showed that the system was operational and the radionuclide separation was selective with high chemical yield. The procedure manages as well the generated liquid wastes containing high level of 60Co activity.

Keywords

ERAWAST Copper beam dump Exotic radionuclides 

Notes

Acknowledgments

The authors would like to express their gratitude to Dave Piguet for his valuable technical support.

References

  1. 1.
    Magill J, Pfenning IG, Galy IJ (2006) Karlsruher Niklidkarte 7. Auflage, Office for official publications of the European Communities, LuxembourgGoogle Scholar
  2. 2.
    Rugel G, Faestermann T, Knie K, Korschinek G, Poutivtsev M, Schumann D, Kivel N, Günther-Leopold I, Weinreich R, Wohlmuther M (2009) New measurement of the 60Fe half-life. Phys Rev Lett. doi: 10.1103/PhysRevLett.103.072502
  3. 3.
    Schumann D, Neuhausen J (2008) Accelerator waste as a source for exotic radionuclides. J Phys G Nucl Par Phys. doi: 10.1088/0954-3899/35/1/014046
  4. 4.
    ERAWAST current status (2009) http://lch.web.psi.ch/files/ERAWAST.pdf
  5. 5.
    Schumann D, Neuhausen J, Eikenberg J, Rüthi M, Wohlmuther M, Kubik PW, Synal H-A, Alfimov V, Korschinek G, Rugel G, Faestermann TH (2009) Radiochemical analysis of a copper beam dump irradiated with high-energetic protons. Radiochim Acta. doi: 10.1524/ract.2009.1585
  6. 6.
    Marhol M (1982) In: Svehla G (ed) Comprehensive analytical chemistry, vol XIV. Wilson and Wilson’s, AmsterdamGoogle Scholar
  7. 7.
    Korkisch J (1989) Handbook of ion exchange resins: their application to inorganic analytical chemistry, vol III. CRC Press, Boca RatonGoogle Scholar
  8. 8.
    Dyer FF, Leddicotte GW (1961) Radiochemistry of copper. Oak Ridge National LaboratoryGoogle Scholar
  9. 9.
    Jackwerth E, Willmer PG (1976) Atomabsorptions-spektrometrische Bestimmung von Elementspuren in reinem Kupfer und Kupfersalzen. Z Anal Chem 279:23–27CrossRefGoogle Scholar
  10. 10.
    Mitzuike A (1983) Enrichment techniques for inorganic trace analysis. Springer-Verlag, BerlinGoogle Scholar

Copyright information

© Akadémiai Kiadó, Budapest, Hungary 2010

Authors and Affiliations

  1. 1.Laboratory for Environmental Chemistry and RadiochemistryPaul Scherrer Institute (PSI)VilligenSwitzerland

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